Lightweight Research in Engineering: A Review

Jiao, Wang; Li, Yan; Hu, Gang; Yang, Mingshun

doi:10.3390/app9245322

Cited by 33 publications

(19 citation statements)

References 50 publications

(51 reference statements)

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“…Benefitting from the development of finite element technology and personal computers, topology optimization as a systematic way of achieving lightweight designs has been widely used in different industrial fields [11][12][13][14]. In this work, topology optimization was firstly applied to achieve a lightweight billet tong design.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Topology Optimization for Curved Arm of Multifunctional Billet Tong Based on Characterization of Working Conditions

Liu

Wang

Song

et al. 2022

J. Eng. Technol. Sci.

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A windlass driven heavy duty multifunctional billet tong was designed for large-scale forging and casting to reduce the number of auxiliary material handling devices in manufacturing workshops. To improve its mechanical performance and safety, a novel multi-objective topology optimization method for its curved arm is proposed in this paper. Firstly, the influence of different open angles and working frequencies for the curved arm was simplified to a multi-objective optimization problem. A comprehensive evaluation function was constructed using the compromise programming method, and a mathematical model of multi-objective topology optimization was established. Meanwhile, a radar chart was employed to portray the comparative measures of working conditions, the weight coefficient for each working condition was determined based on the corresponding enclosed areas, combining the stress indices, the displacement indices and the frequency indices of all working conditions. The optimization results showed that the stiffness and strength of the curved arm can be improved while its weight can be reduced by 10.77%, which shows that it is feasible and promising to achieve a lightweight design of the curved arm of a billet tong. The proposed method can be extended to other equipment with complex working conditions.

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Section: Introductionmentioning

confidence: 99%

Multi-Objective Topology Optimization for Curved Arm of Multifunctional Billet Tong Based on Characterization of Working Conditions

Liu

Wang

Song

et al. 2022

J. Eng. Technol. Sci.

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“…Reducing weight can lower energy consumption and manufacturing costs, which has become critical for realizing various design schemes. To ensure the good performance of structures and materials, reducing the mass and improving the payload are common goals in many fields (Plocher & Panesar, 2019, Wang et al 2019. However, traditional homogeneous material structures and their corresponding design methods have been unable to meet the requirements of complex extreme load conditions and particular circumstances.…”

Section: Introductionmentioning

confidence: 99%

Design optimization of lightweight structures inspired by the rostrum in Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae)

Li¹,

Guo²,

Liu³

et al. 2022

Mater. Res. Express

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The rostrum of Cyrtotrachelus buqueti Guer has excellent mechanical properties, such as high-specific strength and high-specific stiffness, and it is an example of successful evolution in nature. In this paper, based on the biological structural characteristics of the rostrum, bionic variable-density lightweight structures of varying layer number are designed, and their mechanical properties are analyzed under different helix angles. The results show that when the helix angle is greater than or equal to 40°, the maximum compressive load borne by the three-layer tube is 30.75 N, which is 1.89 times that of the single-layer tube. Through calculation, at a helix angle of 15°, the torsion lightweight coefficient of the single-layer, double-layer, and three-layer structures is 0.99 ± 0.03 N•M/g, 1.75 ± 0.05 N•M/g, and 2.32 ± 0.06 N•M/g, respectively, where that of the three-layer structure was approximately 2.34 times that of the single-layer structure. Further calculations show that the bending lightweight factor of the single-layer, double-layer, and three-layer tubes is 17.89 ± 0.20 N/g, 33.16 ± 0.45 N/g, 41.33 ± 0.55 N/g, respectively, where that of the three-layer tube is 2.31 times that of the single-layer tube. In addition, this paper also investigates the cushioning energy absorption characteristics of the bionic lightweight tubes by using an impact testing machine. The results show that under the same conditions, as the number of layers of the lightweight tube increases, the buffering energy absorption also increases. The total energy absorption and specific energy absorption of the three-layer lightweight tube are approximately 10 times those of the single-layer tube. Finally, a response surface-based optimization method is proposed to optimize the bionic structures under a combined compression-torsion load. The results lay the foundation for the lightweight design of thin-walled tube structures.

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“…In order to save energy resources and reduce carbon emissions, there is an urgent requirement for lightweight materials and structures for key components in the automotive, aerospace, and other fields. [1][2][3] Hydroforming is an advanced technology for manufacturing thin-walled components with lightweight and hollow structures. It has many advantages such as high structural strength and stiffness for the formed components, lower die cost, less production procedure, and high dimensional accuracy, and is widely used in automobiles, aerospace, and other fields.…”

Section: Introductionmentioning

confidence: 99%

Plastic wrinkling of thin-walled tubes under axial compression in non-uniform temperature field

Cui

Guo

Wen

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The main purpose of this paper is to reveal the wrinkling behavior of thin-walled tubes under axial compression in a non-uniform temperature field formed by induction heating on a local position. The distribution of non-uniform temperature fields induced by induction heating and the wrinkling behavior of tubes under axial compression were studied by combining experiments and simulations. Moreover, the thickness and hardness distribution of the wrinkled tube were analyzed. The results show that the maximum temperature difference along axial direction of 5052 aluminum alloy and AZ31B magnesium alloy tubes can reach 129.1°C and 134.7°C in experiments, respectively. In the non-uniform temperature field with a maximum temperature of 250°C, axisymmetric wrinkles can be formed under axial compression on the tubes. With the increase of axial compression, the wrinkle width gradually decreases and its height gradually increases. The contour shape of wrinkles can be fitted accurately with GaussAmp function. There is an obvious thickening phenomenon on the wrinkles and the thickest point is located on the wrinkle top, where the thickness gradually increases with increasing the axial compression. In addition, the microhardness at the wrinkles is lower than that of the original tubes. It decreases with the increase in axial compression. The maximum reduction of microhardness of 5052 aluminum alloy and AZ31B magnesium alloy tubes at the wrinkles are 41.6% and 17%, respectively. This study not only can provide tube blank with useful wrinkles for hydroforming, but also can provide experimental data for establishing buckling theory of inhomogeneous tube shells.

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Lightweight Research in Engineering: A Review

Cited by 33 publications

References 50 publications

Multi-Objective Topology Optimization for Curved Arm of Multifunctional Billet Tong Based on Characterization of Working Conditions

Multi-Objective Topology Optimization for Curved Arm of Multifunctional Billet Tong Based on Characterization of Working Conditions

Design optimization of lightweight structures inspired by the rostrum in Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae)

Plastic wrinkling of thin-walled tubes under axial compression in non-uniform temperature field

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